Electric engine-starter.



M. P. MITCHELL.

ELECTRIC ENGINE STARTER.

APPLICATION FILED APR.24, 1914.

Patented Dec. 22, 1914.

3 SHEETS-SHEET l.

Inventor,

Attorneys Patented Dec. 22, 1914.

Attorneys.

3 SHEETSSHEET 2.

M. P. MITCHELL.

ELECTRIC ENGINE STARTER.

APPLICATION FILED APR.24,1914.

Patented Dec. 22, 1914.

3 SHEETS-SHEET 3.

Inventor,

Attorneys.

55 tor-generator as MARY r. MITCHELL, or Enron, omo.

ELECTRIC ENGINE-STARTER.

Specification of Letters Patent.

Patented Dec. 22, 1914;

Applicationfiled April 24, 1914. Serial No. 834,207.

To all whom a may concern Be it known that I, MARY P. MITCHELL, a citizen of the United States, residing at Eaton, in the county of Preble and State of Ohio, have invented a new and useful Eleci6 of the invention being the provision of an electric starter, constituting a motor and generator or a motor-generator, and provided with operable connections, whereby when the engine is initially started and the i5 motor-gen rator is operating as a motor, the

engine will be properly rotated for the initial starting thereof, the same after attaining speed through a selective mechanism operating the motor-generator as a generator so as to store the current in the batteries for again starting the motor and also for operating the electric lighting and signaling ineansused in connection with motor cars.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the com i and arrangement of parts and in the nee-1.11s of construction hereinafter described and claimed, it being understood fit) that changes in the precise embodiment of the invention herein disclosed can he made within th 360136 f what is claimed without denarting fmin th spirit of thejnv nti n.

In media-wings Figure 1 is a view :1 s

elevation of the forward part ofa motor car showing the present electric starter in operable relation thereto, Fig. 2 1s a top plan view thereof. Fig. 3 is an enlarged detail A sectional view through the ratchet connect- 'g'ea'r operably connected to the crank shaft er the explosive engine. Fig. 4 is a section taken on line of Fig. 3. Fig. 5 is asectional view of the niotor=generator shaft and the clutch mechanism carried tl'ier'eby. Fig. 6 is an electrical diagram of the present installation.

7 Referring to thedra win s, E designates the explosion engine and v the motor-gen- "erator, the crank shaft 1 of the explosion engine having fixed thereon, the large gear wheel 2, which may be a bevel, spur or other form of gear for causing the explosion engine to be started through the. instrumentality of the motor and generator or the mowill presently appear or the motor-generatorrto be operated from the explosion engine as a generator, also as will presently appear.

small pinion or bevel or'epur gear 3 is rotatably mounted upon the motor-generator shaft 4:, and is recessed to fit about one end of the sleeve 5, and is provided with the internal ratchet teeth 6, while carried by the sleeve 5 are the pairs of lugs 7 for the pivotal mounting of the pawls 8 which are normally held outward by the springs 9. Thus when the shaft 4 is being operated. as a motor, the pawls will cause the gear 3 to be operated in the direction of the arrows Fig. 3 so as to rotate the gear 2 in the direction of the arrow and consequently impart the do sired motion to the crank shaft of the ex plosion engine. A

Splined upon the shaft 4 adjacent the inner end of the sleeve 5 for sliding movement relative to the shaft and for rotation therewith, is a sleeve 10, which is provided with the clutch teeth 11 at its forward end and with the pinion 12 at its rear end. Upon the end of the sleeve 5 adjacent to the clutch 11, as at 13. is a clutch 14, which thus permits the motor-generator shaft 4 when the motor is operating as a motor to be connected so as to drive the pinion 3 as hereto fore described. Journaled parallel to the shaft 4 is a shaft 15, which has fixed upon one end to be engaged by the pinion 12 when the clutch sleeve 10 is moved to extreme rear position, the pinion 16, a gear 17 being fixed to the forward end thereof and in mesh at all times with the gear 3. It will thus be seen that when the gear 12 is in mesh with the gear 16, and the engine E is operating explosively, that the gear 3 will rotate freely in the direction of the arrow Fig 3, without disturbing or transmitting motion to the sleeve 5, but will transmit motion to the gear 17 and through the shaft 15 and the gears 16 and 12 rotate the shaft 4 and c0nsequently operate the motor-generator as a generator.

In order to provide a means for selectively operating the sliding member 10, the lever 17 having the yoke end 13 is mounted adjacent the sleeve 10, there being disposed upon the lower end thereof, a link 19 which is extended rearwardl and connected to the manually controlle lever 20. Thus the chauffeur or operator of the motor car may selectively operate the member 10, so that the motor-generator G will be connected to initially rotate to start the explosive engine G, and can again be operated as a generator to supply the current to the storage battery B. When the storage batteries have been properly charged, thevlever 20 may be op= erated to place the sleeve 10 in neutral position, or as is well known, a governor mechanism may be employed actuated by the current of the storage battery for throwing the clutch or sleeve 10. In the'present instance, the m'otor generat or G is provided with the two commutators 21 and 22, the forward one of which is the motor commu tator while the latterv is the generator commutator. It is therefore essential thatthe brushes '23 and 24 alternately engage the respective commutators sothat-the device will operate either asa motor or generator. v To accomplish this, the brushes 23 and 24 are connected to the; ivotedyoke or walking beam. 25, which through tli'e'arni 26 and the rod 27 nayi be rna'nuall y operated, as the operating end 28 of; thefrod 27 is projected in 'ready access to the chauffeur or operator; Whereapinion or gears are em-' ployed, it is evident that spur or bevel gears may be'used, according toxthafposition of the present installation relatively to the crank shaft of the engine.

What is claimed is:

1. The combination with an explosion engine, of' an. electric starting mechanism thereforgmcludlng" anelectric; motor-generator, a gear fixed'tolithe'engine shaft, a

gear, freely rotatable upon "the motor-generator shaft, a sletzVealso 'f-re'ely rotatable upon the generator shaft,fcooperating pawl and ratchet means"earried'-' bysaid sleeve and the gear'of the motor generator shaft Copies 0! this patentniay be obtained for gear freely rotatable upon the motor-gem erator shaft, a sleeve also freely rotatable upon the. motor-generator shaft, cooperat-v ing pawl and ratchet means carried by said sleeve and'the gear of the motor-generator to thesleeve, adlutch'earried by the motorgenerator Shafta-ndone end of thesleeve,

whereby the sleeve may be'connected'to the shaft for fixedlyconnecting the said gear motor-generator shaft when the motor-gem erator is operating .a'sa motor, a secondary shaft'mounted in' parallel to'vthe' motorgenerat-or shaft, agearfixed thereupon and -meshing with the" freely rotatable gear of the motor-generator'shaft, and cooperable selective -means carried by the secondary shaft and'the clutch member, whereby the secondary shaft is connected .to the motorgenerator shaft and the first "gear operates through allgears to'operate the motor-generator as a generator.

In testimony that I claim the foregoing as my own, I have hereto afiixedumy. Sig-- nature in the presence off'two' witnesses.

- MARYpP. lWITCHELL. Witnesses: Q

HARRY L. Riemann, L'. D; Lnsg.

five cents each, by addressing the tiominissloner of Patents, Washington, D. 0." 

